Air quality index [µg/m3]:
excellent ≤ 20
good ≤ 60
lightly polluted ≤ 100
moderately polluted ≤ 140
heavily polluted ≤ 200
severely polluted > 200
PM 2.5
[µg/m3]
PM 10
HOUR OPOLSKA ST. ROOF (BEFORE FILTERS)  AIR SUPPLIED TO OFFICES
130027goodexcellent51excellent
120032goodexcellent61excellent
110045goodexcellent81excellent
100070lightly pollutedexcellent111excellent
090079lightly pollutedexcellent131excellent
080085lightly pollutedexcellent131excellent
070082lightly pollutedexcellent121excellent
060078lightly pollutedexcellent121excellent
050063lightly pollutedexcellent91excellent
040053goodexcellent91excellent
030053goodexcellent81excellent
020059goodexcellent81excellent
010078lightly pollutedexcellent111excellent
000081lightly pollutedexcellent101excellent
230070lightly pollutedexcellent101excellent
220060goodexcellent101excellent
210049goodexcellent91excellent
200034goodexcellent51excellent
190030goodexcellent51excellent
180025goodexcellent41excellent
170019excellentexcellent41excellent
160018excellentexcellent41excellent
150025goodexcellent41excellent
140027goodexcellent51excellent